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34 lines
921 B
C++
34 lines
921 B
C++
#include <Storages/MergeTree/MergeTreeIndexReader.h>
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namespace DB
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{
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MergeTreeIndexReader::MergeTreeIndexReader(
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MergeTreeIndexPtr index_, MergeTreeData::DataPartPtr part_, size_t marks_count_, const MarkRanges & all_mark_ranges_)
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: index(index_), stream(
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part_->disk,
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part_->getFullRelativePath() + index->getFileName(), ".idx", marks_count_,
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all_mark_ranges_,
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MergeTreeReaderSettings{}, nullptr, nullptr,
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part_->getFileSizeOrZero(index->getFileName() + ".idx"),
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&part_->index_granularity_info,
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ReadBufferFromFileBase::ProfileCallback{}, CLOCK_MONOTONIC_COARSE)
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{
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stream.seekToStart();
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}
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void MergeTreeIndexReader::seek(size_t mark)
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{
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stream.seekToMark(mark);
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}
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MergeTreeIndexGranulePtr MergeTreeIndexReader::read()
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{
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auto granule = index->createIndexGranule();
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granule->deserializeBinary(*stream.data_buffer);
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return granule;
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}
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}
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